João 1

"Behold the Lamb of God!"

29 The next day John sees Jesus coming toward him and says: "Look! The Lamb of God who takes away the sin of the world!*A tremendous statement! The Sacrifice to end all blood sacrifices is now physically present in the world.

34 So I have seen and testified that this is the Son of God."*That is what he said, "the Son of God" (actually, ‘the Son of the God’), which here probably means that there is only one. John clearly identifies and presents the Messiah to the populace. He performed his office.